Manish has to secure 40% marks to pass his B.tech final exams.
He got just 40 marks and failed by 40-marks.

What is the maximum marks?

Can you make a fire with just a single stick?

Which is the smallest number that you can write using all the vowels exactly once?

Can you solve the maths in the below-given picture equation?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

How can you make the following equation true by drawing only one straight line: 5+5+5=550 ?

A quarter is one-fourth of a dollar but Mr. John has changed the equation as below :

DOLLAR * 4 = QUARTER

Can you replace each letter with a digit to make the above solution correct?

In the city of Brain Teasers, 5% of people do not list their phone numbers. Now if we select random 100 people from the phone directory, then how many people selected will have unlisted phone numbers?

The first person saw the bridge step on it and crossed,
the second person saw the bridge did not step on it but crossed,
the third person did not see the bridge did not step on it but crossed.
Who are these people?

What happened when the wheel was invented?